Safe and reliable disposable medical scalpel
By adopting the design of installation components and check components in disposable medical scalpels, the contamination and wear of traditional surgical blades is solved, and simple and convenient installation and stability are achieved, the risks of infection and accidental injury are reduced, and the blade is sharp. degree and durability.
Patent Information
- Application Number
- CN202411523095.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-01-10
AI Technical Summary
Traditional medical surgical blades are prone to contamination, wear and corrosion during use, increasing the risk of cross-infection, and are difficult to install, which can easily cause harm to medical staff.
A disposable medical scalpel including a tool holder and a blade is designed, using installation components and check components. Through the installation rod, installation projection, pressing plate and check ratchet, simple and convenient blade installation and stable fixation are achieved. Reduce the risk of infection and accidental injury.
It realizes simple and convenient installation of the blade, improves installation stability, reduces the risk of infection and accidental injury, and ensures the sharpness and durability of the blade.
Smart Images
Figure CN119279703A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of medical equipment, in particular to a safe and reliable disposable medical scalpel. Background Art
[0002] Medical scalpels are an indispensable and important tool in surgical operations. Their design and material have an important impact on the success of the operation and the patient's recovery. Medical scalpels refer to special knives composed of blades and handles, which are used to cut human or animal tissues. According to different surgical needs and uses, scalpels can be divided into many types, such as ordinary scalpels, high-frequency electric knives, argon knives, ultrasonic emulsification suction knives, etc. Each scalpel has its own unique characteristics and scope of application. During the operation, the surgical blade will come into direct contact with the patient's blood, tissues, etc., and there is a high risk of contamination. Even if subsequent steps such as recycling, cleaning and disinfection are carried out, it is difficult to ensure that all microorganisms are completely eliminated, thereby increasing the risk of cross-infection. Surgical blades will be worn and corroded during use, especially when cutting tissues. Due to the immersion of blood (alkaline) and the wear of various tissues, the blade edge will become blunt and corrosion may occur on the surface. This will not only affect the sharpness of the surgical blade, but may also cause the scalpel to break easily, rust, etc., which in turn affects the quality of the operation. Disposable surgical blades can effectively avoid these problems, not only reducing the risk of infection, but also ensuring that sharp, non-corrosive blades are used in each operation, improving the success rate of the operation and patient satisfaction. However, in traditional operations, the installation between the handle and the blade is difficult, and because the blade is relatively sharp, it is easy for the blade to cut medical staff during the installation process. In view of this, we propose a safe and reliable disposable medical scalpel. Summary of the invention
[0003] The purpose of the present invention is to provide a safe and reliable disposable medical scalpel, which solves the problems raised in the above-mentioned background technology through its configuration.
[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a safe and reliable disposable medical scalpel, comprising a handle and a blade, wherein one end of the handle is provided with a mounting rod for placing the blade, and the mounting rod is provided with a mounting assembly for detachably mounting the blade; The mounting assembly includes a mounting protrusion arranged on the mounting rod, a mounting base fixedly connected to the mounting rod is provided at a position of the mounting protrusion close to the mounting rod, a mounting groove engaged with the mounting protrusion and the mounting base is provided on the blade, a placement groove is provided on the mounting protrusion, a pressure plate for squeezing the blade is rotatably installed in the placement groove, and a non-return assembly for preventing the pressure plate from loosening is provided in the mounting protrusion.
[0005] Furthermore, the outer dimensions of the mounting base increase in order from top to bottom; Furthermore, an operating cavity is provided in the mounting protrusion, the non-return assembly comprises a synchronous rotating shaft arranged in the operating cavity and coaxially fixed to the pressure plate, a guide groove is provided inside the synchronous rotating shaft, a guide member is slidably installed in the guide groove, a non-return ratchet is coaxially fixed to one side of the guide member, a non-return pawl is meshed with the outside of the non-return ratchet, and a rotating end of the non-return pawl is elastically hinged to the operating cavity, a driving rod is coaxially fixed to one side of the non-return ratchet, and one end of the driving rod passes through the operating cavity and is installed with a knob, and a non-return spring fixed to the guide groove is provided at one end of the guide member away from the non-return ratchet; Furthermore, the cross sections of the guide member and the guide groove are both cross-shaped; Furthermore, a lifting protrusion is provided on the blade near the handle, and the outer dimensions of the lifting protrusion increase in order from bottom to top; Furthermore, the handle is provided with a plurality of anti-slip grooves; Furthermore, the cross section of the anti-slip groove is set to be a trapezoid, and its smallest end is close to the center of the handle; Furthermore, the blade is made of carbon steel; The present invention has the following beneficial effects: The present invention makes the installation of the blade very simple and convenient by setting the installation assembly, avoiding accidental injury of the blade to medical staff during the installation process. In addition, the setting of the check assembly can prevent the pressure plate from rotating, ensuring the stability of the blade installation. In addition, since the external dimensions of the installation base increase in order from top to bottom, when the pressure plate presses the blade to move downward, the engagement between the installation groove on the blade and the installation base is tighter.
[0006] The present invention reduces the range of blade movement and ensures the stability of its installation by setting the check assembly. When removing the blade, the knob can be pressed to squeeze the check ratchet wheel to shrink in the direction of the guide groove through the driving rod, thereby causing the check ratchet wheel to disengage from the state of meshing with the check pawl, so that the pressure plate can be retracted into the placement groove, which is convenient for the subsequent removal of the blade. Figure 1 As shown, the non-return assembly is close to the blunt surface of the blade, so when operating the non-return assembly, the risk of medical personnel being scratched by the blade can be reduced.
[0007] The present invention prevents the auxiliary tool from directly contacting the blade surface through the design of the lifting protrusion, thereby reducing the risk of infection. In addition, the special setting of the lifting protrusion shape increases the contact area of the auxiliary tool for clamping the blade, thereby improving the operability of the blade. In addition, the setting of the anti-slip groove increases the contact area between the medical staff and the handle, thereby improving the stability of the medical staff in grasping the scalpel.
[0008] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the cross-section result of the knife handle of the present invention; Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle A area; Figure 4 for Figure 2 Schematic diagram of the enlarged structure of the middle B area; Figure 5 for Figure 2 Schematic diagram of the enlarged structure of the middle C area; Figure 6 It is a schematic diagram of the structure of the pressing plate of the present invention; Figure 7 for Figure 6 Schematic diagram of the enlarged structure of the middle D area; Figure 8 It is a schematic diagram of the blade structure of the present invention.
[0011] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Knife handle; 2. Blade; 3. Mounting assembly; 31. Mounting protrusion; 32. Mounting base; 33. Placement slot; 34. Mounting slot; 35. Pressure plate; 36. Check assembly; 361. Synchronous shaft; 362. Guide slot; 363. Guide piece; 364. Check spring; 365. Check ratchet; 366. Check pawl; 367. Drive rod; 4. Lifting protrusion; 5. Mounting rod; 6. Anti-slip groove. DETAILED DESCRIPTION
[0012] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Example
[0013] See also Figure 1-8As shown, this embodiment is a safe and reliable disposable medical scalpel, comprising a handle 1 and a blade 2, and a mounting rod 5 for placing the blade 2 is provided at one end of the handle 1, and a mounting assembly 3 for detachably mounting the blade 2 is provided on the mounting rod 5; during the operation, the blade 2 can be taken out of the packaging bag first, and then placed on the mounting rod 5 using hemostatic forceps or other tools, and the blade 2 can be fixedly installed by the mounting assembly 3 arranged thereon to prevent the blade 2 from falling off.
[0014] The mounting assembly 3 includes a mounting protrusion 31 disposed on the mounting rod 5, a mounting base 32 fixedly connected to the mounting rod 5 is disposed near the mounting protrusion 31, a mounting groove 34 engaged with the mounting protrusion 31 and the mounting base 32 is disposed on the blade 2, a placement groove 33 is provided on the mounting protrusion 31, a pressing plate 35 for pressing the blade 2 is rotatably mounted in the placement groove 33, and a non-return assembly 36 for preventing the pressing plate 35 from loosening is disposed in the mounting protrusion 31. When the blade 2 is installed, the blade 2 can be installed on the mounting rod 5 by engaging the mounting groove 34 on the blade 2 with the mounting protrusion 31, and then the pressing plate 35 can be turned over and rotated out of the placement groove 33, and the blade 2 can be pressed by the pressing plate 35, so as to achieve the effect of fixing the blade 2. This installation method is simple and convenient, and avoids accidental injury to a person by the blade 2 during the installation process. In addition, the setting of the non-return assembly 36 can prevent the pressing plate 35 from rotating, thereby ensuring the stability of the installation of the blade 2.
[0015] The outer dimensions of the mounting base 32 increase in order from top to bottom. Since the outer dimensions of the mounting base 32 increase in order from top to bottom, when the pressure plate 35 presses the blade 2 to move downward, the engagement between the mounting groove 34 on the blade 2 and the mounting base 32 is tighter, further improving the installation stability of the blade 2.
[0016] An operating cavity is provided in the mounting protrusion 31, and the non-return assembly 36 includes a synchronous rotating shaft 361 arranged in the operating cavity and coaxially fixed with the pressure plate 35, a guide groove 362 is provided inside the synchronous rotating shaft 361, a guide member 363 is slidably installed in the guide groove 362, a non-return ratchet 365 is coaxially fixed to one side of the guide member 363, a non-return pawl 366 is meshed with the outside of the non-return ratchet 365, and the rotating end of the non-return pawl 366 is elastically hinged to the operating cavity, a driving rod 367 is coaxially fixed to one side of the non-return ratchet 365, and one end of the driving rod 367 passes through the operating cavity and is installed with a knob, and the end of the guide member 363 away from the non-return ratchet 365 is provided with a non-return spring 364 fixed to the guide groove 362. Under normal conditions, the pressure plate 35 is in the placement groove 33. During the process of installing the blade 2, the pressure plate 35 will rotate out of the placement groove 33 until the blade 2 is squeezed. At this time, although the non-return ratchet 365 rotates under the action of the synchronous shaft 361, the guide groove 362 and the guide member 363, the non-return ratchet 365 is not engaged with the non-return pawl 366, so the non-return ratchet 365 can rotate normally. When the blade 2 wants to tilt upward due to vibration or other factors, it will drive the non-return ratchet 365 reverses, at which time the non-return ratchet 365 is engaged with the non-return pawl 366 and cannot rotate, and the pressure plate 35 cannot move, thereby reducing the movement range of the blade 2 and ensuring its installation stability. When removing the blade 2, the knob can be pressed to squeeze the non-return ratchet 365 to shrink in the direction of the guide groove 362 through the driving rod 367, thereby causing the non-return ratchet 365 to be out of engagement with the non-return pawl 366, so that the pressure plate 35 can be retracted into the placement groove 33, which is convenient for the subsequent removal of the blade 2. In addition, Figure 1 As shown, the non-return assembly 36 is close to the blunt surface of the blade 2 , so when the non-return assembly 36 is operated, the risk of medical personnel being scratched by the blade 2 can be reduced.
[0017] The cross sections of the guide member 363 and the guide groove 362 are both cross-shaped. The cross-shaped cross section increases the contact area between the guide member 363 and the guide groove 362, thereby improving the synchronization between the pressure plate 35 and the non-return ratchet 365, and further increasing the installation stability of the blade 2. Example
[0018] See also Figure 1-8 As shown, this embodiment is a safe and reliable disposable medical scalpel. A lifting protrusion 4 is provided on the blade 2 near the handle 1, and the external dimensions of the lifting protrusion 4 increase in order from bottom to top. The design of the lifting protrusion 4 in this embodiment facilitates medical personnel to operate the blade 2 through tools, avoids the auxiliary tool from directly contacting the blade surface of the blade 2, and reduces the risk of infection. In addition, the special setting of the shape of the lifting protrusion 4 increases the contact area of the auxiliary tool for clamping the blade 2, and improves the operability of the blade 2.
[0019] The knife handle 1 is provided with a plurality of anti-skid grooves 6. The provision of the anti-skid grooves 6 increases the contact area between the medical staff and the knife handle 1, and improves the stability of the medical staff in grasping the scalpel.
[0020] The cross section of the anti-skid groove 6 is set to be trapezoidal, and its smallest end is close to the center of the handle 1. The special setting of the anti-skid groove 6 reduces the possibility of dirt and grime inside it, and facilitates subsequent cleaning and disinfection of the handle 1.
[0021] The blade 2 is made of carbon steel. Carbon steel has excellent hardness and cutting ability due to its high carbon content. This enables the carbon steel blade 2 to maintain a sharp edge and easily penetrate and cut various biological tissues, including hard tissues such as bones and ligaments. In surgeries that require precise cutting and high sharpness, the carbon steel blade 2 performs well. In addition, carbon steel is also relatively hard, which means it has good wear resistance and can maintain sharpness for a long time.
[0022] How it works During the operation, the blade 2 can be taken out of the packaging bag first, and then placed on the mounting rod 5 using hemostatic forceps or other tools, and the blade 2 can be fixed and installed by the mounting assembly 3 arranged thereon to prevent the blade 2 from falling off. When the blade 2 is installed, the blade 2 can be installed on the mounting rod 5 by engaging the mounting groove 34 on the blade 2 with the mounting protrusion 31, and then the pressing plate 35 can be turned over, and the pressing plate 35 can be rotated out of the placement groove 33, and the blade 2 can be pressed by the pressing plate 35, so as to achieve the effect of fixing the blade 2. This installation method is simple and convenient, and avoids the blade 2 from accidentally injuring the personnel during the installation process. In addition, the setting of the check assembly 36 can prevent the pressing plate 35 from rotating, thereby ensuring the stability of the installation of the blade 2. Since the external dimensions of the mounting base 32 increase in order from top to bottom, when the pressing plate 35 presses the blade 2 to move downward, the engagement between the mounting groove 34 on the blade 2 and the mounting base 32 is tighter, further improving the installation stability of the blade 2. Under normal conditions, the pressure plate 35 is in the placement groove 33. During the process of installing the blade 2, the pressure plate 35 will rotate out of the placement groove 33 until the blade 2 is squeezed. At this time, although the non-return ratchet 365 rotates under the action of the synchronous shaft 361, the guide groove 362 and the guide member 363, the non-return ratchet 365 is not engaged with the non-return pawl 366, so the non-return ratchet 365 can rotate normally. When the blade 2 wants to tilt upward due to vibration or other factors, it will drive the non-return ratchet 365 reverses, at which time the non-return ratchet 365 is engaged with the non-return pawl 366 and cannot rotate, and the pressure plate 35 cannot move, thereby reducing the movement range of the blade 2 and ensuring its installation stability. When removing the blade 2, the knob can be pressed to squeeze the non-return ratchet 365 to shrink in the direction of the guide groove 362 through the driving rod 367, thereby causing the non-return ratchet 365 to be out of engagement with the non-return pawl 366, so that the pressure plate 35 can be retracted into the placement groove 33, which is convenient for the subsequent removal of the blade 2. In addition, Figure 1As shown, the non-return assembly 36 is close to the blunt surface of the blade 2, so when operating the non-return assembly 36, the risk of medical staff being scratched by the blade 2 can be reduced. The cross-shaped cross section increases the contact area between the guide member 363 and the guide groove 362, thereby improving the synchronization between the pressure plate 35 and the non-return ratchet 365, and further increasing the installation stability of the blade 2. The design of the lifting protrusion 4 in this embodiment is convenient for medical staff to operate the blade 2 through tools, avoiding the auxiliary tool from directly contacting the blade 2, reducing the risk of infection. In addition, the special setting of the shape of the lifting protrusion 4 increases the contact area of the auxiliary tool for clamping the blade 2, and improves the operability of the blade 2. The setting of the anti-slip groove 6 increases the contact area between the medical staff and the handle 1, and improves the stability of the medical staff in grasping the scalpel. The special setting of the anti-slip groove 6 reduces the possibility of dirt and grime inside it, and facilitates the subsequent cleaning and disinfection of the handle 1. Carbon steel has excellent hardness and cutting ability due to its high carbon content. This enables the carbon steel blade 2 to maintain a sharp edge and easily penetrate and cut a variety of biological tissues, including hard tissues such as bones and ligaments. In surgeries that require precise cutting and high sharpness, the carbon steel blade 2 performs well. And carbon steel is also relatively hard, which means it has good wear resistance and can maintain its sharpness for a longer time.
[0023] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A safe and reliable disposable medical scalpel, comprising a handle (1) and a blade (2), wherein one end of the handle (1) is provided with a mounting rod (5) for placing the blade (2), characterized in that: The mounting rod (5) is provided with a mounting assembly (3) for detachably mounting the blade (2); The mounting assembly (3) comprises a mounting protrusion (31) arranged on the mounting rod (5); a mounting base (32) fixedly connected to the mounting rod (5) is provided at a position of the mounting protrusion (31) close to the mounting rod (5); a mounting groove (34) engaged with the mounting protrusion (31) and the mounting base (32) is provided on the blade (2); a placement groove (33) is provided on the mounting protrusion (31); a pressure plate (35) for pressing the blade (2) is rotatably installed in the placement groove (33); and a non-return assembly (36) for preventing the pressure plate (35) from loosening is provided in the mounting protrusion (31).
2. A safe and reliable disposable medical scalpel according to claim 1, characterized in that: The external dimensions of the mounting base (32) increase in order from top to bottom.
3. A safe and reliable disposable medical scalpel according to claim 2, characterized in that: An operating cavity is provided in the mounting protrusion (31), and the non-return assembly (36) comprises a synchronous rotating shaft (361) disposed in the operating cavity and coaxially fixed to the pressure plate (35), wherein a guide groove (362) is provided inside the synchronous rotating shaft (361).
4. A safe and reliable disposable medical scalpel according to claim 3, characterized in that: A guide member (363) is slidably mounted in the guide groove (362); a non-return ratchet (365) is coaxially fixed to one side of the guide member (363); a non-return pawl (366) is meshed with the outside of the non-return ratchet (365); a rotating end of the non-return pawl (366) is elastically hinged to the operating chamber; a driving rod (367) is coaxially fixed to one side of the non-return ratchet (365); one end of the driving rod (367) passes through the operating chamber and is mounted with a knob; and a non-return spring (364) is provided at one end of the guide member (363) away from the non-return ratchet (365) and fixed to the guide groove (362).
5. A safe and reliable disposable medical scalpel according to claim 4, characterized in that: The cross sections of the guide member (363) and the guide groove (362) are both cross-shaped.
6. A safe and reliable disposable medical scalpel according to claim 5, characterized in that: A lifting protrusion (4) is provided on the blade (2) at a position close to the handle (1).
7. A safe and reliable disposable medical scalpel according to claim 6, characterized in that: The external dimensions of the lifting protrusion (4) increase in order from bottom to top.
8. A safe and reliable disposable medical scalpel according to claim 7, characterized in that: The knife handle (1) is provided with a plurality of anti-slip grooves (6).
9. A safe and reliable disposable medical scalpel according to claim 8, characterized in that: The cross section of the anti-slip groove (6) is arranged to be trapezoidal, and its smallest end is close to the center position of the knife handle (1).
10. A safe and reliable disposable medical scalpel according to claim 9, characterized in that: The blade (2) is made of carbon steel.